Cutlery-grinding machine.



10.844,871. PATBNTBD 1113,19, 1907. o. L. JOY. GUTLERY GRINDING MACHINE. APPLICATION FILED 00T.24.190A5.

3 SHEETS-SHEET l.

WITNESSES v No. 844,871. l PATEN'IED FEB. 19, 1907.

C. L. JOY. CUTLERY GRINDING MACHINE.

APPLIOATION FILED 001224,1905.

a SHEETS-Bumm.

wxTNEssEs INVENTOR ATTORNEY No. 844,871. PATENTED FEB. 19, 1907.

. C. L. JOY.

CUTLERY GRINDING MACHINE.

APPLICATION FILD 00T.24,1905.

3 SHEETS-SHEET 3.

WITNESSES MM. a j @we BY if) ATTORNEY 1HE NoRms PETERS co.. wAsmNaruN. n. c.

UNTTF STATES PATENT FFTCE.

CUTLERY-GRlNDlNG MACHINE.

Specification of Letters Patent.

Patented Feb. 19, 1907.

Application tiled October 24. 1905. Serial No. 284,167.

To all 'whom t may] concer/t:

Be it known that 1, CHARLES L. JOY, a citizen of the United States, and a resident of New Haven, in the county of N ew Haven and State of Connecticut, have invented certain new and useful Improvements in Cutlery-Grinding Machines, of which the 'following' is a specitication.

My invention relates to Cutlery-grinding machines; and it consists in certain details ot construction to be hereinafter more fully set` forth in the following' specification.

To enable others to understand my invention, reference is had to the accompanying drawings, in which- Figure 1 represents an upper plan View of the carriage and mechanism connected therewith and broken View of the grinding-wheel spindle. Fig. 2 is a side elevation of the machine looking in the direction of arrow a, Fig'. 1. Fig. 3 is a broken end elevation of the machine looking in the direction o'f arrow l), Fig. 1. Fig. 4 is a broken upper plan View of the carriage and its support, sectional View of the worin-gear 'for operating' the carriage, sectional View of the cam for operating the knife-holder support, and sectional View of the carriage-driver mounted on the rack-pinion shaft. Fig. 5 is a detail lront elevation of the carriagealriver. Fig. 6 is a detail side elevation of the carriage-driver. Fig. 7 is a detail side elevation of the worm-gear connected with the carriage-operating mechanism. Fig. 8 is a broken upper plan View of the rack-pinion shaft of the carriage mechanism, broken upper plan View of the swinging knife-holder support, and mechanism for operating the same.

Its construction and operation are as 'follows:

1 is the supporting-standard of the machine; 2, a bracket projecting from the standard to support the adjustable bedplate 3.

4 is the carriage-support secured to the bed-plate.

5 is the carriage slidably` mounted on the support 4.

` 6 is the knife-holder; 7, the knife-holder support. The l nife-holder is pivotally supported on the pins 8, located in the raised portion 7a ot' the knife-holder support or knife-holder-supporting plate, which plate has the projection 9 at its forward end to 'form a long' bearing' for the retaining-bolt 10, on which the knife-holder support is adapted to swing' for the purpose presently to be described.

11 is the driving-shaft, journaled in the boxes 12 and 13, located on the underside of the bed-plate 3, as shown at Fig. 2. 14 is a worm on this shai't meshing with the wormg'ear 15, which gear, with its hub 15a, is loosely mounted on the rack-pinion shaft 16. The inner end ol this shaft is j ournaled in the bearings 17 and 1S, secured to the sides of the carriage-support 4, as shown at Figs. 3 and 4, while its outer end is journaled in the box 16a, secured to the bed-plate. The inner end ol this shaft carries the pinion 19 to engage with the rack 20 on the under side ot' the carriage 5. The driving-shaft is rotated through the medium o'f'the pulleys 21 and 22 mounted thereon. The former pulley is adapted to drive the carriage during' the grinding operation presently to be described and the latter when the carriage is ruiming idle. 23 and 24 are clutch-pins carried on the inner faces ol these pulleys to be alternately engaged by the clutch-pins 25 and 26 on the outer face of the clutch-sleeve 27, slidably mounted on the driving-shaft.

28 is a clutch-lever with one end engaging the clutch-sleeve and the opposite end pivotally supported on the body )ortion of the screw 2U, Fig'. 1, of the bed-plate.

29 is a shipper-red slidably mounted in the supperts 30 and 31 el" the bed-plate 3. The `forward end of this rod is connected to the clutch-lever 2S.

32 is a pivotally-supported llccking-lever adapted to be engaged with the collar 33 on the shipper-rod when the shipper-red handle 34 is moved in one direction to transmit motion to the carriage in grinding', and 35 is a trip-arm adjustably secured to the carriage 5, adapted to engage the latch-lever 32 to release the latch-leyers engagement with the callar 33 and place the shipper-rod under the influence of the spring 3G, which spring will actua-te the clutch-lever 27 to throw the clutch into engagement with the clutch-pins of the driving-pulley for the return of the carriag'e, and 37 is an adjustable stop on the shipper-rod to be engaged by the arm 35 to bring the carriage to a standstill at the completian of its return movement.

38 is a cup-shaped einery grinding-wheel attached to the head 39 of the spindle 40. This spindle is journaled in suitable bearings, which bearings, tege ther with the pulley for driving the spindle and other mechanism the worm-gear.

connected therewith, are not shown, as they form no part of my present invention.

41 is a bracket projecting from the carriage 5, in which is journaled the short vertical rock-shaft 42, carrying the upper and lower arms 43 and 44. The upper arm 43 carries the roll 45, adapted to be brought into engagement with the pin 46, projecting from the side of the knife-holder support 7, to swing said support around for the purpose presently to be explained. The lower arm 44 carries the taper roll 47, adapted to engage with the cam 4S, secured to the hub 15 of the worm-gear 15. The knife-blade 49 rests against the holder 6, with the handle portion 50 resting on the lower support 51, while the upper adjusting-screw 52 and the end adjusting-screw 53 adjust the position of the blade.

In grinding the knife is properly lo cated on the holder when said holder is away from the grinding-wheel, as shown at Fig. 1. In ,this view, however, the holder is shown farther from the wheel than would be the case in actual practice. Vhen the knife is in position, the carriage is set p in motion to carry the knife toward the wheel by means of the shipper-handle lever 34, as before described. This will cause the carriage to travel idly forward until the edge 38a of the grinding-wheel is directly opposite the neck 49a of the knifeblade, when the carriage will be automatically reversed. In the forward movement cf the carriage the worm-gear will rotate in the direction of arrow d, Fig. 1, and in the epposite direction, as shown by arrow e. When the neck of the knife is opposite the edge tf the wheel, as before mentioned, and the driving-shaft is reversed to return the carriage, it is necessary to halt the carriage long enough to swing the free end of the knifeholder support 7 around to bring the neck tf the knife in cont act with the grinding-wheel. This is accomplished as fellows: 54, Figs. 4, 5, and 6, is a collar secured to the rack-pinion shaft 16, and it has the projectign 54a on its inner face adapted to be alternately engaged by the faces 15b and 15C of the hub portion 15d of the worm-gear (shown at Fig. 7 to rotate the rack-pinion shaft in either direction. The distance between these faces cf the hub 15d will represent the standstill of the carriage, so that when the reverse movement takes place, as before mentioned, the wormgear will travel idle in the direction of arrow e until the face 15b engages with the projection 54EL of the collar, when said collar and shaft 16 will also be reversed to travel with The forward movement of the carriage 5 will bring the roll 47 within the operating influence of the cam 48 on the hub of the worm-gear 15, so that when the wormgear is reversed said cam will engage with the roll 47 to actuate the rock-shaft 42 into the position shown at Fig. 8. This will bring the roll :45 into engagement with the pin 46 of the knife-holder support 7 and cause said support to swing on its pivotal point in the direction of arrow h, Fig. 1, to force the neck of the knife into engagement with the grinding-wheel. By the time this engagement is effected the face 15b, Fig. 7, of the Worm-gear will contact with the projection 54a of the collar 54 and cause the rack-pinion shaft to rotate with said gear and return the carriage to grind the knife-blade from the neck to the point. 55 is an adjusting-screw located in the movable block 56, mounted on the bedplate 3, so that when the carriage has retreated far enough to effect the grinding of the knife-blade the lower arm 44 will strike this screw and rotate the ro ck-shaft to bring about the disengagement of the roll 45 with the pin 46 of the swinging knife-holder support and permit said holder to be carried back to its norm al position by the spring 57, as shown at Fig. 1. By the time the return of the knife-holder support is effected the shipping mechanism u ill have brought the clutchsleeve 27 into its normal intermediate position to bring the carriage to a standstill.

58, Figs. l and 2, is a pin mounted upon a coiled sprinO (not shown) in the support 59, adapted to be engaged by the block 60 (see also Fig. 3) on the under side of the carriage 5, so that when the neck of the knife is in position to be brought against the edge of the grinding-wheel the carriage will be in a position to bring said block and spring-pin into engagement with each other, and the tension of this spring-pin on the under side of the carriage will prevent the carriage moving during the reversing period and while the worm-gear is running idle. When, however, the knife-holder support has been swung around and the neck of the knife brought against the grinding-wheel, the carriage will be moved out of contact with this spring-pin by the engagement of the worm-gear with the collar on the rack-pinion shaft, as before mentioned.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a cutlery-grinding machine, a longitudinally-reciprocating carriage, a support IOf IIC

therefor, a grinding-wheel, a knife-holder, a

knife-holder support operatively mounted thereon and pivotally supported at one end thereto, means to swing the knife-holder support laterally on the carriage to bring .the knife-holder into operative position with respect to the grinding-wheel, and means to automatically return said knife-holder s upport after the operation of grinding isl completed, for the purpose set forth.

2. In a cutlery-grinding machine, a longitudinally-reciprocating carriage, a support therefor, a grinding-wheel, a knife-holder, a knife-holder support mounted on the carriage and pivotally supported at one end to said carriage, a raek on the under side of the gear loosely embracing said shaft, a eam oonearriage, a shaft for said Carriage Carrying a pinion to engage the raek, a driving-shaft, means for operating the same, a worm on said shaft, a worin-gear loosely mounted on the carriage-shaft to mesh therewith, a hub on said gear, a driver hxed to the carriageshaft, means on the gear to enable it to rotate while the carriage-shaft remains idle, a eam on the hub of the worin-gear, a roekshaft pivotally supported on the carriage, arms at each end thereof, said arms carrying rolls, one roll to engage the knife-holder support, the other roll to engage the Cani on the worm-ge ar hub, so that, through the medium of said eam and rock-shaft, the knife-holder support is swung laterally on the carriage, for the purpose set forth.

3. ln a eutlery-griiuling machine, a longitudinally-reeiproeating carriage, a support therefor, a knife-holder, a knife-holder suping the rotation of the carriage-shaft until port pivotally supported on said carriage, a 1

after the forward movement of the knifeholder support has been eou'ipleted, means for ti-nnporaril)T holding the carriage against a retrograde movement until after the eoinpletion of the forward movement of the knife-holder support, for the purpose set forth.

4. In a cutlery-grinding machine, a reciprocating Carriage, a support therefor, a grinding-wheel, a Aki'iife-holder, a lmife-holder supi i i I I i i i i i rack on the under side of the Carriage, a l

shaft journaled in the Carriage-support, a pinion thereon to mesh with the raek, a wormtrolled by said gear, means to be engaged by said eam to swing the knife-holder support toward the griinling-wheel, a driving-shaft, a worm thereon to .mesh with the worm-gear, a driver on the carriage-shaft, means whereby the rotation oi' the carriage-shaft is temporarily eheeked until after the forward movement of the knife-holder support has been effected, means also to temporarily cheek the return movement of the carriage, for the purpose set forth.

In a eutlery-grimling maehine, a reciprocating Carriage, a support therefor, a knifeholder', a knife-holder support operatively mounted on the. carriage, means for pivotally supporting it thereto, a grinding wheel, means to swing the knife-holder support laterally on the carriage toward the grindingwheel, means to temporarily cheek the return movement of the carriage until after the lateral movement of the knife-holder supriage and adapted thereby to have a lateral movement thereon, means to eil'eet a move- .ment of the carriage aeross the faee of the wheel until the edge of said wheel is opposite the neek 49 of the knife, means for autoniatieally swinging the knife-holder support toward the grinding-wheel to bring the said neek of the knife against the wheel, means for reversing the carriage while the knife and wheel are thus engaged, means for automatieally returning the li'nife-holder support to its normal position after the carriage has been returned to its normal position at the completion of the griiiding, for the purpose set forth.

Signed at New Haven, in the eounty of New Haven and State of Conneetieut, this 14th day of October, A. D. 1905.

CHARLES L. JOY.

Titnesses Gnonon A. TYLER, JonN il. CANNON. 

